For our "protection", HSBC is introducing limits on how much you can send to exchanges:

Our new payment limits From August 2023, we’re limiting the value of payments you can send to cryptocurrency exchanges using:

your debit card our digital banking services (online and mobile banking) our branches and contact centres

We'll apply the following limits:

Payments – £2,500 for a single transaction and a total of £10,000 in any rolling 30-day period. Debit cards – £2,500 for a single transaction and a total of £10,000 in any rolling 30-day period.